Granted Patent
Utility
US 6,561,283 · App. 09/801,177
Frame support for tillage implement
Inventor:
David R. Hundeby
Patented Case
View Patent ↗
Granted: May 13, 2003
Filed: Mar 6, 2001
Inventor
David R. Hundeby
Assignee (at issue)
Flexi-Coil Ltd.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.